mastery of/over• The main points of comparison involve vocabulary, syntax, and mastery of the writing system.• But mastery of helium-3 / deuterium fusion may permit other entirely new applications.• Tilda had initiated the train of events, as, with her carelessmastery of life, she often did.• They have battled for years for mastery of the region.• Grandcourt knows well that he will soon have mastery over a woman who would like to master him.• Selection to the team is based on mastery ofspecified gymnastic skills.• Perhaps the most significantaspect of the technical and rationalmastery of the modern world has been bureaucracy.• Alphabetic writing requires mastery of several dozen symbols that are needed for phonemic representation.• Quite simply mastery ofcoloniallanguages gave a few people unfettered power.• Might not the mastery of a skill quickly mean that an approach to learning through discovery could be more effectively undertaken?